US20170028321A1 - Bellows, Filter Element, and Method - Google Patents
Bellows, Filter Element, and Method Download PDFInfo
- Publication number
- US20170028321A1 US20170028321A1 US15/223,273 US201615223273A US2017028321A1 US 20170028321 A1 US20170028321 A1 US 20170028321A1 US 201615223273 A US201615223273 A US 201615223273A US 2017028321 A1 US2017028321 A1 US 2017028321A1
- Authority
- US
- United States
- Prior art keywords
- adhesive material
- filter medium
- bellows
- end section
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims description 9
- 239000000463 material Substances 0.000 claims abstract description 82
- 239000000853 adhesive Substances 0.000 claims abstract description 76
- 230000001070 adhesive effect Effects 0.000 claims abstract description 76
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000005060 rubber Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 239000000446 fuel Substances 0.000 description 6
- 229920002994 synthetic fiber Polymers 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 239000002313 adhesive film Substances 0.000 description 2
- 239000003570 air Substances 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- -1 polyvinylsulfite Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- PXJJSXABGXMUSU-UHFFFAOYSA-N disulfur dichloride Chemical compound ClSSCl PXJJSXABGXMUSU-UHFFFAOYSA-N 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/10—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
- B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D27/00—Cartridge filters of the throw-away type
- B01D27/02—Cartridge filters of the throw-away type with cartridges made from a mass of loose granular or fibrous material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/111—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/15—Supported filter elements arranged for inward flow filtration
- B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/15—Supported filter elements arranged for inward flow filtration
- B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
- B01D29/213—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets having a concertina shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/23—Supported filter elements arranged for outward flow filtration
- B01D29/232—Supported filter elements arranged for outward flow filtration with corrugated, folded or wound sheets
- B01D29/235—Supported filter elements arranged for outward flow filtration with corrugated, folded or wound sheets having a concertina shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/005—Filters specially adapted for use in internal-combustion engine lubrication or fuel systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/0005—Mounting of filtering elements within casings, housings or frames
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/03—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/12—Pleated filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/29—Filter cartridge constructions
- B01D2201/291—End caps
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/02—Gasoline
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/04—Diesel oil
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/06—Gasoil
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G31/00—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for
- C10G31/09—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for by filtration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/0004—Oilsumps
- F01M2011/0029—Oilsumps with oil filters
Definitions
- the present invention concerns a bellows for a filter element, a filter element with such a bellows, and a method for producing such a bellows.
- Filter elements for example, oil filter elements, comprise a star-shaped folded endless bellows that is arranged between two end disks. In order to form such an endless bellows, a first end section of a filter medium and a second end section of the filter medium are connected with each other.
- the present invention has the object to provide an improved bellows for a filter element.
- a bellows for a filter element comprises a flat filter medium, wherein a first end section of the filter medium is adhesively connected by means of a vulcanizable adhesive material with a second end section of the filter medium.
- the vulcanizable adhesive material has elastomeric properties. Accordingly, the bellows is deformable to a great extent without the adhesive connection of the end sections being damaged.
- the vulcanizable adhesive material is particularly resistant against fluids such as fuel or oil.
- the vulcanizable adhesive material has a significantly higher viscosity so that a mold for application of the adhesive material to the end sections is not mandatorily required.
- the adhesive material reacts chemically when heated so that it is crosslinked, swells, and/or foams.
- the bellows can also be referred to as an endless bellows.
- the adhesive material comprises rubber.
- the adhesive material may comprise natural and/or synthetic rubber.
- the adhesive material may comprise sulfur or sulfur-donating substances, such as disulfur dichloride, and may further comprise fillers as well as catalysts for increasing the reaction rate.
- the adhesive material is foamable and/or expandable by exposure to heat. In this way, the adhesive material penetrates also into small cavities or gaps so that a particularly good connection and sealing action of the end sections of the filter medium is achieved.
- the filter medium is of a multi-layer configuration wherein the adhesive material connects individual layers of the filter medium with each other at the end sections.
- the adhesive material is designed to seal cut edges of the multi-layer filter medium. In this way, not only a permanent connection of the end sections with each other is achieved but also a sealing action of the cut edges is obtained.
- the filter medium is folded wherein respective terminal folds of the filter medium form the end sections.
- the filter medium is in particular arranged such that the bellows is star-shaped.
- the filter medium forms a closed ring.
- the filter medium may not be folded and is thus flat.
- the adhesive material is designed to impregnate the filter medium. In this way, the adhesive material penetrates into the filter medium so that the end sections are fluid-tightly sealed and connected to each other.
- the filter element comprises preferably a first end disk and a second end disk wherein the bellows is arranged between the end disks.
- the filter medium is used preferably in motor vehicles, trucks, construction vehicles, watercraft, railway vehicles, agricultural machines or vehicles, or aircraft.
- the filter element can be designed to filter water, air, urea solution, oil or fuel, such as diesel fuel, kerosene or gasoline.
- the filter element can be, for example, an oil filter, a fuel filter or the like.
- a method for producing a bellows comprises the following method steps: providing a flat filter medium; supplying a vulcanizable adhesive material; and adhesively connecting a first end section of the filter medium with a second end section of the filter medium by means of the adhesive material, wherein the adhesive material is vulcanized.
- the adhesive material is heated for vulcanizing it.
- heating jaws can be provided, for example.
- the heated adhesive material is of high viscosity so that it does not run.
- the adhesive material is extruded during or prior to supplying the same.
- the adhesive material can be flat, of a multi-layer configuration, or rolled.
- the adhesive material can be extruded to any cross-sectional geometry.
- the adhesive material can have an E-shaped, T-shaped or W-shaped cross-sectional geometry.
- the adhesive material is vulcanized in a mold.
- the adhesive material and at least partially the end sections are placed into the mold.
- the adhesive material is boiled and expanded and/or foamed so that it fluid-tightly and permanently connects the end sections with each other.
- FIG. 1 shows a schematic perspective partial section view of an embodiment of a filter element.
- FIG. 2 shows a schematic plan view of an embodiment of a bellows for the filter element according to FIG. 1 .
- FIG. 3 is an enlarged detail view of the bellows according to FIG. 2 according to the detail III of FIG. 2 .
- FIG. 4 is a schematic plan view of an embodiment of an adhesive material for the bellows according to FIG. 2 .
- FIG. 5 is a schematic plan view of an embodiment of a mold for processing the adhesive material according to FIG. 4 .
- FIG. 6 is a schematic perspective view of a further embodiment of an adhesive material for the bellows according to FIG. 2 .
- FIG. 7 is a schematic perspective view of a further embodiment of an adhesive material for the bellows according to FIG. 2 .
- FIG. 8 is a schematic block diagram representation of a method for producing a bellows.
- FIG. 1 shows a schematic perspective partial section view of an embodiment of a filter element 1 .
- the filter element 1 can be suitable to filter water, air, urea solution, oil or fuel, such as diesel fuel, kerosene or gasoline.
- the filter element 1 is used in motor vehicles, trucks, construction vehicles, watercraft, railway vehicles or aircraft.
- the filter element 1 can also be used in buildings.
- the filter element 1 can be an air filter, oil filter, fuel filter or the like.
- the filter element 1 comprises a bellows 2 , in particular an endless bellows.
- the bellows 2 is made of a filter medium 3 .
- the filter medium 3 is configured as a fold pack of pleated filter material. Frequently, synthetic nonwoven materials, folded in a zigzag shape, are used as filter materials.
- the filter medium 3 comprises, for example, a filter fabric, laid filter material, or a filter nonwoven.
- the filter medium 3 can be produced by a spunbonding or meltblowing method.
- the filter medium 3 can be felted or needled.
- the filter medium 3 may comprise natural fibers, such as cellulose or cotton, or synthetic fibers, for example, of polyester, polyvinylsulfite, or polytetrafluoroethylene. Fibers of the filter medium 3 can be oriented during processing slantedly and/or transversely relative to the machine direction.
- an end disk 5 , 6 is provided at a respective end of the filter medium 3 on fold profiles 4 of the folded filter medium 3 which forms the bellows 2 .
- the filter element 1 comprises at least one end disk 5 , 6 , preferably however two end disks 5 , 6 .
- the end disks 5 , 6 are connected fluid-tightly with the filter medium 3 .
- an adhesive connection of the end disks 5 , 6 with the filter medium 3 can be realized, for example, with an adhesive film which is facing the filter medium 3 .
- the filter element 1 is imparted with a certain stability and can be used in an appropriate fluid circuit.
- the filter medium 3 can also be pressed into partially melted material of the end disks 5 , 6 .
- a connecting opening 7 is a part of the upper end disk 5 , for example.
- the lower end disk 6 can also be provided with a connecting opening 8 which, like the connecting opening 7 of the upper end disk 5 , is connectable to an operating medium connector.
- fold profiles 4 of the bellows 2 are shown at the top side.
- the fluid to be filtered for example, oil
- the filter surface area that is enlarged by the pleated filter medium 3 .
- the filter materials and geometries of the filter medium 3 or of the filter element 1 are matched to a predetermined flow direction.
- FIG. 1 laterally the raw fluid RO and in upward and downward directions the filtered clean fluid RL are illustrated.
- a surface of the bellows 2 which is facing the interior 9 of the filter element 1 is the outflow side and the outer wall surface of the cylindrical bellows 2 is the inflow side of the filter element 1 .
- an optional support element 10 in particular a support pipe, is provided which is positioned between the end disks 5 , 6 .
- the support element 10 can be connected with the end disks 5 , 6 .
- FIG. 2 shows a schematic view of an embodiment of the bellows 2 .
- the bellows 2 is star-shaped and of a closed ring configuration.
- the bellows 2 is therefore an endless bellows.
- FIG. 3 shows an enlarged perspective detail of FIG. 2 according to the area III circled in FIG. 2 .
- reference is being had simultaneously to FIGS. 2 and 3 .
- the filter medium 3 may comprise a filter layer 11 as well as support structures 12 , 13 arranged on either side of the filter layer 11 .
- the support structures 12 , 13 can be of a grid shape.
- the filter medium 3 comprises a first end section 14 and a second end section 15 .
- the first end section 14 of the filter medium 3 is adhesively connected with the second end section 15 by means of a vulcanizable adhesive material 16 .
- the adhesive material 16 comprises preferably synthetic and/or natural rubber.
- the adhesive material 16 can moreover comprise sulfur or sulfur-donating substances, such as disulfide dichloride, and catalysts.
- the adhesive material 16 can be present, for example, in a flat, multi-layer, extruded or rolled form. In particular, the adhesive material 16 is foamable and/or expandable by exposure to heat.
- the adhesive material 16 is designed to impregnate the filter medium 3 .
- the adhesive material 16 reacts chemically so that it expands and penetrates into the filter medium 3 .
- the end sections 14 , 15 of the filter medium are sealed as well as fluid-tightly connected with each other.
- folds in particular terminal folds, form the end sections 14 , 15 of the filter medium 3 , respectively.
- FIG. 4 shows that the filter medium 3 and in particular the end sections 14 , 15 may have several layers 17 to 19 .
- the adhesive material 16 can be extruded, for example, and in cross-section can have an E-shaped geometry with three webs 20 to 22 which extend away from a base section 23 .
- the end sections 14 , 15 are arranged between the webs 20 to 22 and the adhesive material 16 can be heated, for example, by means of heating jaws 24 , 25 .
- the adhesive material 16 reacts chemically, in particular it is vulcanized, wherein the adhesive material 16 penetrates in and between the individual layers 17 to 19 of the end sections 14 , 15 and connects them to each other fluid-tightly.
- FIG. 5 shows a mold 26 for heating the adhesive material 16 .
- the adhesive material 16 is placed into the mold 26 wherein the end sections 14 , 15 at least partially are also arranged in the mold 26 .
- the adhesive material 16 boils and impregnates as well as envelopes the end sections 14 , 15 so that they are connected fluid-tightly to each other.
- Heating jaws 24 , 25 can be arranged on the exterior side of the mold 26 . Alternatively, the heating jaws 24 , 25 can be integrated into the mold 26 .
- FIG. 6 shows an embodiment of an adhesive material 16 in an extruded form wherein the adhesive material 16 has a T-shaped geometry with a horizontally extending short web 27 and a vertically extending long web 28 .
- the cross-sectional geometry of the adhesive material 16 is completely arbitrary and can be matched to the end sections 14 , 15 to be connected or to the number of layers 17 to 19 of the end sections 14 , 15 to be connected to each other.
- FIG. 7 shows a further embodiment of an extruded adhesive material 16 .
- the extruded adhesive material 16 comprises, for example, an M shape or upside down W shape.
- the end sections 14 , 15 can be arranged between the legs of the M shape or upside down W shape.
- FIG. 8 shows schematically a block diagram of a method for producing such a bellows 2 .
- the flat filter medium 3 is provided. In this context, it may be folded in a zigzag shape.
- the vulcanizable adhesive material 16 is supplied. During or prior to supplying the adhesive material 16 , the latter can be extruded into a desired shape.
- step S 3 the first end section 14 of the filter medium 3 is adhesively connected with the second end section 15 of the filter medium 3 by means of the adhesive material 16 wherein the adhesive material 16 is vulcanized.
- the adhesive material 16 can be vulcanized in the mold 26 .
- Vulcanization causes the adhesive material 16 to foam and/or expand.
- vulcanization causes the adhesive material 16 to penetrate into the end sections 14 , 15 of the filter medium 3 and thereby connect them fluid-tightly.
- the adhesive material 16 that can also be referred to as adhesive film is resistant relative to fluids such as fuel or oil. Moreover, the adhesive material 16 , due to its swelling behavior, penetrates well into the filter medium 3 and connects the end sections 14 , 15 of the filter medium 3 reliably with each other. Moreover, cut edges of multi-layer filter media 3 can be reliably and fluid-tightly framed.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Filtering Materials (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Filtration Of Liquid (AREA)
Abstract
Description
- The present invention concerns a bellows for a filter element, a filter element with such a bellows, and a method for producing such a bellows.
- Filter elements, for example, oil filter elements, comprise a star-shaped folded endless bellows that is arranged between two end disks. In order to form such an endless bellows, a first end section of a filter medium and a second end section of the filter medium are connected with each other.
- DE 10 2011 011 771 A1 describes a method for producing a filter element. In this context, two end sections of a flat filter medium are connected to each other by a plastic material in that solid, in particular thread-shaped, synthetic material is plastified between the end sections that are placed on each other.
- Based on this background, the present invention has the object to provide an improved bellows for a filter element.
- Accordingly, a bellows for a filter element is proposed that comprises a flat filter medium, wherein a first end section of the filter medium is adhesively connected by means of a vulcanizable adhesive material with a second end section of the filter medium.
- In contrast to a thermoplastic synthetic material, the vulcanizable adhesive material has elastomeric properties. Accordingly, the bellows is deformable to a great extent without the adhesive connection of the end sections being damaged. In particular, the vulcanizable adhesive material is particularly resistant against fluids such as fuel or oil. In comparison to a connection with polyurethane material, the vulcanizable adhesive material has a significantly higher viscosity so that a mold for application of the adhesive material to the end sections is not mandatorily required. In particular, the adhesive material reacts chemically when heated so that it is crosslinked, swells, and/or foams. The bellows can also be referred to as an endless bellows.
- In embodiments, the adhesive material comprises rubber. The adhesive material may comprise natural and/or synthetic rubber. Moreover, the adhesive material may comprise sulfur or sulfur-donating substances, such as disulfur dichloride, and may further comprise fillers as well as catalysts for increasing the reaction rate.
- In further embodiments, the adhesive material is foamable and/or expandable by exposure to heat. In this way, the adhesive material penetrates also into small cavities or gaps so that a particularly good connection and sealing action of the end sections of the filter medium is achieved.
- In further embodiments, the filter medium is of a multi-layer configuration wherein the adhesive material connects individual layers of the filter medium with each other at the end sections. In particular, the adhesive material is designed to seal cut edges of the multi-layer filter medium. In this way, not only a permanent connection of the end sections with each other is achieved but also a sealing action of the cut edges is obtained.
- In further embodiments, the filter medium is folded wherein respective terminal folds of the filter medium form the end sections. The filter medium is in particular arranged such that the bellows is star-shaped. In particular, the filter medium forms a closed ring. Alternatively, the filter medium may not be folded and is thus flat.
- In further embodiments, the adhesive material is designed to impregnate the filter medium. In this way, the adhesive material penetrates into the filter medium so that the end sections are fluid-tightly sealed and connected to each other.
- Moreover, a filter element with such a bellows is proposed. The filter element comprises preferably a first end disk and a second end disk wherein the bellows is arranged between the end disks. The filter medium is used preferably in motor vehicles, trucks, construction vehicles, watercraft, railway vehicles, agricultural machines or vehicles, or aircraft. The filter element can be designed to filter water, air, urea solution, oil or fuel, such as diesel fuel, kerosene or gasoline. The filter element can be, for example, an oil filter, a fuel filter or the like.
- Moreover, a method for producing a bellows is proposed. The method comprises the following method steps: providing a flat filter medium; supplying a vulcanizable adhesive material; and adhesively connecting a first end section of the filter medium with a second end section of the filter medium by means of the adhesive material, wherein the adhesive material is vulcanized. The adhesive material is heated for vulcanizing it. For this purpose, heating jaws can be provided, for example. Preferably, the heated adhesive material is of high viscosity so that it does not run.
- In embodiments, the adhesive material is extruded during or prior to supplying the same. The adhesive material can be flat, of a multi-layer configuration, or rolled. In particular, the adhesive material can be extruded to any cross-sectional geometry. For example, the adhesive material can have an E-shaped, T-shaped or W-shaped cross-sectional geometry.
- In further embodiments, the adhesive material is vulcanized in a mold. Preferably, the adhesive material and at least partially the end sections are placed into the mold. By heating the mold, the adhesive material is boiled and expanded and/or foamed so that it fluid-tightly and permanently connects the end sections with each other.
- Further possible implementations of the invention comprise also combinations, not explicitly mentioned, of features or method steps described above or in the following with regard to the embodiments. In this context, a person of skill in the art will also add individual aspects as improvements or supplements to the respective basic form of the invention.
- Further embodiments of the invention are subject matter of the dependent claims as well as of the embodiments of the invention described in the following. Moreover, the invention will be explained in more detail with the aid of embodiments with reference to the accompanying Figures.
-
FIG. 1 shows a schematic perspective partial section view of an embodiment of a filter element. -
FIG. 2 shows a schematic plan view of an embodiment of a bellows for the filter element according toFIG. 1 . -
FIG. 3 is an enlarged detail view of the bellows according toFIG. 2 according to the detail III ofFIG. 2 . -
FIG. 4 is a schematic plan view of an embodiment of an adhesive material for the bellows according toFIG. 2 . -
FIG. 5 is a schematic plan view of an embodiment of a mold for processing the adhesive material according toFIG. 4 . -
FIG. 6 is a schematic perspective view of a further embodiment of an adhesive material for the bellows according toFIG. 2 . -
FIG. 7 is a schematic perspective view of a further embodiment of an adhesive material for the bellows according toFIG. 2 . -
FIG. 8 is a schematic block diagram representation of a method for producing a bellows. - In the Figures, same or functionally the same elements, if not indicated otherwise, are provided with the same reference characters.
-
FIG. 1 shows a schematic perspective partial section view of an embodiment of afilter element 1. Thefilter element 1 can be suitable to filter water, air, urea solution, oil or fuel, such as diesel fuel, kerosene or gasoline. In particular, thefilter element 1 is used in motor vehicles, trucks, construction vehicles, watercraft, railway vehicles or aircraft. Moreover, thefilter element 1 can also be used in buildings. For example, thefilter element 1 can be an air filter, oil filter, fuel filter or the like. - The
filter element 1 comprises abellows 2, in particular an endless bellows. Thebellows 2 is made of afilter medium 3. In particular, thefilter medium 3 is configured as a fold pack of pleated filter material. Frequently, synthetic nonwoven materials, folded in a zigzag shape, are used as filter materials. Thefilter medium 3 comprises, for example, a filter fabric, laid filter material, or a filter nonwoven. In particular, thefilter medium 3 can be produced by a spunbonding or meltblowing method. Moreover, thefilter medium 3 can be felted or needled. Thefilter medium 3 may comprise natural fibers, such as cellulose or cotton, or synthetic fibers, for example, of polyester, polyvinylsulfite, or polytetrafluoroethylene. Fibers of thefilter medium 3 can be oriented during processing slantedly and/or transversely relative to the machine direction. - At the top side and bottom side in the orientation of
FIG. 1 , anend disk filter medium 3 on fold profiles 4 of the foldedfilter medium 3 which forms thebellows 2. Thefilter element 1 comprises at least oneend disk end disks end disks filter medium 3. In this context, an adhesive connection of theend disks filter medium 3 can be realized, for example, with an adhesive film which is facing thefilter medium 3. By means of theend disks filter element 1 is imparted with a certain stability and can be used in an appropriate fluid circuit. Thefilter medium 3 can also be pressed into partially melted material of theend disks opening 7 is a part of theupper end disk 5, for example. In analogy thereto, thelower end disk 6 can also be provided with a connectingopening 8 which, like the connectingopening 7 of theupper end disk 5, is connectable to an operating medium connector. - In the orientation of
FIG. 1 , fold profiles 4 of thebellows 2 are shown at the top side. In operation, for example, as an oil filter, the fluid to be filtered, for example, oil, flows through the filter surface area that is enlarged by thepleated filter medium 3. In general, the filter materials and geometries of thefilter medium 3 or of thefilter element 1 are matched to a predetermined flow direction. For example, inFIG. 1 , laterally the raw fluid RO and in upward and downward directions the filtered clean fluid RL are illustrated. Accordingly, in the orientation ofFIG. 1 , a surface of thebellows 2 which is facing theinterior 9 of thefilter element 1 is the outflow side and the outer wall surface of the cylindrical bellows 2 is the inflow side of thefilter element 1. Inside thebellows 2, anoptional support element 10, in particular a support pipe, is provided which is positioned between theend disks support element 10 can be connected with theend disks -
FIG. 2 shows a schematic view of an embodiment of thebellows 2. As shown inFIG. 2 , thebellows 2 is star-shaped and of a closed ring configuration. Thebellows 2 is therefore an endless bellows. -
FIG. 3 shows an enlarged perspective detail ofFIG. 2 according to the area III circled inFIG. 2 . In the following, reference is being had simultaneously toFIGS. 2 and 3 . - The
filter medium 3 may comprise afilter layer 11 as well assupport structures filter layer 11. Thesupport structures filter medium 3 comprises afirst end section 14 and asecond end section 15. For forming thebellows 2, thefirst end section 14 of thefilter medium 3 is adhesively connected with thesecond end section 15 by means of a vulcanizableadhesive material 16. Theadhesive material 16 comprises preferably synthetic and/or natural rubber. Theadhesive material 16 can moreover comprise sulfur or sulfur-donating substances, such as disulfide dichloride, and catalysts. Theadhesive material 16 can be present, for example, in a flat, multi-layer, extruded or rolled form. In particular, theadhesive material 16 is foamable and/or expandable by exposure to heat. - Preferably, the
adhesive material 16 is designed to impregnate thefilter medium 3. When heated, theadhesive material 16 reacts chemically so that it expands and penetrates into thefilter medium 3. Accordingly, theend sections FIG. 3 , folds, in particular terminal folds, form theend sections filter medium 3, respectively. -
FIG. 4 shows that thefilter medium 3 and in particular theend sections several layers 17 to 19. Theadhesive material 16 can be extruded, for example, and in cross-section can have an E-shaped geometry with threewebs 20 to 22 which extend away from abase section 23. Theend sections webs 20 to 22 and theadhesive material 16 can be heated, for example, by means ofheating jaws adhesive material 16 reacts chemically, in particular it is vulcanized, wherein theadhesive material 16 penetrates in and between theindividual layers 17 to 19 of theend sections -
FIG. 5 shows amold 26 for heating theadhesive material 16. Theadhesive material 16 is placed into themold 26 wherein theend sections mold 26. By heating themold 26, theadhesive material 16 boils and impregnates as well as envelopes theend sections Heating jaws mold 26. Alternatively, theheating jaws mold 26. -
FIG. 6 shows an embodiment of anadhesive material 16 in an extruded form wherein theadhesive material 16 has a T-shaped geometry with a horizontally extendingshort web 27 and a vertically extendinglong web 28. The cross-sectional geometry of theadhesive material 16 is completely arbitrary and can be matched to theend sections layers 17 to 19 of theend sections -
FIG. 7 shows a further embodiment of an extrudedadhesive material 16. The extrudedadhesive material 16 comprises, for example, an M shape or upside down W shape. Theend sections -
FIG. 8 shows schematically a block diagram of a method for producing such a bellows 2. In step S1, theflat filter medium 3 is provided. In this context, it may be folded in a zigzag shape. In step S2, the vulcanizableadhesive material 16 is supplied. During or prior to supplying theadhesive material 16, the latter can be extruded into a desired shape. - In step S3, the
first end section 14 of thefilter medium 3 is adhesively connected with thesecond end section 15 of thefilter medium 3 by means of theadhesive material 16 wherein theadhesive material 16 is vulcanized. In particular, theadhesive material 16 can be vulcanized in themold 26. Vulcanization causes theadhesive material 16 to foam and/or expand. In particular, vulcanization causes theadhesive material 16 to penetrate into theend sections filter medium 3 and thereby connect them fluid-tightly. - The
adhesive material 16 that can also be referred to as adhesive film is resistant relative to fluids such as fuel or oil. Moreover, theadhesive material 16, due to its swelling behavior, penetrates well into thefilter medium 3 and connects theend sections filter medium 3 reliably with each other. Moreover, cut edges ofmulti-layer filter media 3 can be reliably and fluid-tightly framed. - While specific embodiments of the invention have been shown and described in detail to illustrate the inventive principles, it will be understood that the invention may be embodied otherwise without departing from such principles.
Claims (13)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015009625.7A DE102015009625A1 (en) | 2015-07-29 | 2015-07-29 | Bellows, filter element and method |
DE102015009625.7 | 2015-07-29 |
Publications (1)
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US20170028321A1 true US20170028321A1 (en) | 2017-02-02 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US15/223,273 Abandoned US20170028321A1 (en) | 2015-07-29 | 2016-07-29 | Bellows, Filter Element, and Method |
Country Status (5)
Country | Link |
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US (1) | US20170028321A1 (en) |
EP (1) | EP3124091B1 (en) |
KR (1) | KR20170015134A (en) |
CN (1) | CN106390547A (en) |
DE (1) | DE102015009625A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114635769A (en) * | 2020-12-15 | 2022-06-17 | 北汽福田汽车股份有限公司 | Engine oil filtering device and vehicle |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH231610A (en) * | 1942-06-08 | 1944-03-31 | Auergesellschaft Ag | Process for the production of a particulate air filter, in particular for a breathing apparatus, and a filter produced therefrom. |
DE1157199B (en) * | 1959-11-30 | 1963-11-14 | Tecalemit Ltd | Process for the end-face sealing of filter inserts and devices for carrying out the process |
US3867294A (en) * | 1973-05-09 | 1975-02-18 | Pall Corp | Cylindrical filter elements with improved side seam seal |
US4263017A (en) * | 1980-01-30 | 1981-04-21 | Karn William S | Permeable membrane assembly |
DE4039289A1 (en) * | 1990-12-08 | 1992-06-11 | Knecht Filterwerke Gmbh | Annular filter element for rapid filtration - comprises ends joined by thermoplastic adhesive for sealing filter material folded in zigzag pattern, for easy automation |
US7438812B2 (en) * | 2001-04-10 | 2008-10-21 | Parker-Hannifin Corporation | Filter element and method of making |
DE102009025392A1 (en) * | 2009-06-16 | 2010-12-23 | Mann + Hummel Gmbh | Connecting element for multilayer media, filter element and method for connecting flat media |
DE102009057500B4 (en) * | 2009-12-10 | 2014-01-16 | Mann + Hummel Gmbh | filter cartridge |
DE102011011771A1 (en) | 2011-02-18 | 2012-08-23 | Mann + Hummel Gmbh | Method for manufacturing filter element for filtering e.g. air, used in motor vehicle, involves interconnecting end sections of planar filter material sheet with each other by plastic material |
DE102011077715A1 (en) * | 2011-06-17 | 2012-12-20 | Mahle International Gmbh | Filter element and filter device |
DE102012015876B4 (en) * | 2012-08-08 | 2020-11-05 | Mann+Hummel Gmbh | Filter element, method and device for manufacturing a filter element |
-
2015
- 2015-07-29 DE DE102015009625.7A patent/DE102015009625A1/en not_active Withdrawn
-
2016
- 2016-06-16 EP EP16174697.9A patent/EP3124091B1/en active Active
- 2016-06-23 KR KR1020160078518A patent/KR20170015134A/en unknown
- 2016-07-25 CN CN201610587235.4A patent/CN106390547A/en active Pending
- 2016-07-29 US US15/223,273 patent/US20170028321A1/en not_active Abandoned
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114635769A (en) * | 2020-12-15 | 2022-06-17 | 北汽福田汽车股份有限公司 | Engine oil filtering device and vehicle |
Also Published As
Publication number | Publication date |
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EP3124091B1 (en) | 2020-10-07 |
EP3124091A1 (en) | 2017-02-01 |
DE102015009625A1 (en) | 2017-02-02 |
KR20170015134A (en) | 2017-02-08 |
CN106390547A (en) | 2017-02-15 |
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